We have developed a survey to monitor trees inside and outside of forest in Ethiopia. When testing the survey in June in Addis with 25 experts, we got 1) "illegitimate" error messages, i.e. errors that are preventing us from saving even though there is no error committed and 2) default values even though none had been specified (for example, "Confident?" had a default value of "no" even though we didn't specify that in Collect).

One assumption is that the survey is too complex (we have many attributes and many validation rules).